I have recently got a beautiful cocker pup (8 weeks ago) and work mon-fri (flexi hours) but meaning my girl is left alone for at least 4 hrs each day! I have had two dogs previously (both high energy breeds- springer and a collie) under similar circumstances.
I had two weeks off work when I first bought her home (to start training, bonding, and increase her security) and then got into the following routine.
I walk my pup for 20-25 mins each morning prior to work, feed her breakfast as I leave, leave a kong ball and toys, and lock her in the kitchen with her bed/crate. In the evening shed has another 30 min walk. Both walks include some off lead running.
Initially she cried (I videoed it)
but she has quickly learnt to tolerate it and will settle when I leave and sleep or eat. She doesn't get into mischief and puppy pads allowed her toilet training to continue. At 20 weeks she is able to last until I get home, and uses the pads as an extra blanket to lie on
. I'm sure she would prefer to be with me all the time (as I would prefer to be home full time) but in my experience dogs are very adaptable, and if routine is introduced early they tend to accept it. They don't have the awareness that 'Benji down the road has his owners home all the time'
However, I shower my pup with time and affection when I am home. We play, train, and cuddle for hours each day. And as she gets older, both walks will take longer in order to continue to tire and prepare her to rest when I am out.
The worse thing in my experience is the guilt I feel...and it does restrict my evenings at the moment. I refuse to lock her up alone at night to go out, if I've been in work during the day.
It's not ideal, but I remind myself of all the wonderful things my pup has in her life, and her life with another family who may have been home full time doesn't guarantee she would have had better quality of life. All my dogs have been happy and content, but I have invested a lot of time in the first weeks of having them to ensure that separation wouldn't be an issue. If you can commit to that and give a pup a wonderful home, I say why not! The fact you are even considering the implications tells me that it would be one lucky pup to have you